1,721,169 research outputs found
CONTROLLI IGIENICO-SANITARI E QUALITATIVI SU LINEE DI LAVORAZIONE DELLO YOGURT DI LATTE DI BUFALA: RISULTATI PRELIMINARI
No full textAtti A.I.V.I. XV Convegno Nazionale - Tirrenia 16,17,18 Giugno 200
ANCIENT TETRAPLOIDY AND SLOW MOLECULAR EVOLUTION IN SCAPHIOPHRYNE: ECOLOGICAL CORRELATES OF SPECIATION MODE IN MALAGASY RELICT AMPHIBIANS
No full textKaryotypes of three microhylid frog species of the Malagasy relict genus Scaphiophryne were studied: Scaphiophryne gottlebei, S. madagascariensis and S. spinosa. The latter two showed a plesiomorphic ranoid karyotype of 2n = 26. In contrast, tetraploidy was demonstrated in S. gottlebei, which constitutes an exceptional state among Malagasy amphibians. A combination of different banding techniques and of rDNA-FISH provided evidence for allopolyploidy in the species and for a completed subsequent functional and structural diploidization. Phylogenetic analysis of mitochondrial 16S rDNA sequences revealed a significant deceleration of nucleotide substitution rates in Scaphiophryne. The tetraploidy of S. gottlebei probably occurred early in their radiation. Ecological and behavioural patterns of Scaphiophryne probably favoured intraspecific gene flow and hybridization events, thereby leading to slow molecular substitution rates and to allopolyploid chromosome speciation in S. gottlebei
A chromosomal study of Eumeces and Scincus, primitive members of the Scincidae (Reptilia, Squamata).
No full textKaryological comparison of Sphenops sepsoides, Chalcides chalcides, and C. ocellatus (Reptilia: Scincidae): taxonomic implications.
No full textStudio istomorfologico sull'effetto cutting ottenibile on aspiratore chirurgico ad ultrasuoni in chirurgia generale
No full textTest Particles Behavior in the Framework of a Lagrangian Geometric Theory with Propagating Torsion
No full textChromosomal and molecular analysis of some repeated families in Discoglossus Otth, 1837 (Anura, Discoglossidae): taxonomic and phylogenetic implications
No full textLe colture di sangue come metodo non distruttivo per lo studio dei cromosomi dell'erpetofauna
No full textA draft genome sequence of an invasive mosquito: An Italian Aedes albopictus
No full textThe draft genome sequence of Italian specimens of the Asian tiger mosquito Aedes (Stegomyia) albopictus (Diptera: Culicidae) was determined using a standard NGS (next generation sequencing) approach. The size of the assembled genome is comparable to that of Aedes aegypti; the two mosquitoes are also similar as far as the high content of repetitive DNA is concerned, most of which is made up of transposable elements. Although, based on BUSCO (Benchmarking Universal Single-Copy Orthologues) analysis, the genome assembly reported here contains more than 99% of protein-coding genes, several of those are expected to be represented in the assembly in a fragmented state. We also present here the annotation of several families of genes (tRNA genes, miRNA genes, the sialome, genes involved in chromatin condensation, sex determination genes, odorant binding proteins and odorant receptors). These analyses confirm that the assembly can be used for the study of the biology of this invasive vector of disease. © W. S. Maney & Son Ltd 2015
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